package com.itheima.exerciseTest.method40_49.method46;

public class User {
    public int method1(int a){
        return ++a;
    }
    public double method2(int a){
        // System.out.println(1/0);
        return ++a;
    }
    public String method3(int a){
        return "字符串" + ++a ;
    }
}
